Delcid
氢氧化铝, 氢氧化镁的混合物
🗣️ 情景例句
We cannot leave this problem unattended.
这一问题我们不能置之不理。
But this doesn't mean that Mr. Li is a bookworm.
但这并不意味着李先生是个书呆子。
when the plane suddenly turned round and flew back to the airport.
这时飞机突然调转头来，飞回了机场。